Overview
AMB100-D is a DC monitoring device for intelligent busbar systems, designed for realtime monitoring of incoming sections. It measures 1 bus voltage, 3 output currents, power, energy, 3 leakage currents, 4 temperatures, humidity, with 4 DI and 2 DO. Signal-powered or external supply, communicates via RS485/Modbus-RTU or LORA with daisy-chain. DIN35 rail mounted with AHKC Hall sensors. Ideal for data centres, telecom base stations, and industrial DC distribution.
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DC Power Monitoring
- 1 bus voltage, 3 output currents
- Active power & energy per circuit
- Accuracy: 0.5 class (V/I)
- 3 leakage current inputs
- Signal or auxiliary power
Multichannel Temp & Humidity
- 4 NTC sensor inputs (-20…150℃)
- Accuracy ±1℃
- Builtin humidity sensor
- Colourcoded for phase distinction
- Realtime overtemp alarm
Flexible Communication & Alarm
- RS485/ModbusRTU or LORA
- 2 RJ45 ports (in/out)
- 4 DI, 2 relay outputs (3A/250VDC)
- Programmable alarms (V/I/P/T/leak)
- Onboard buzzer, remote silence
Easy Installation
- DIN35 rail mounting
- Splitcore Hall sensors
- Compact design, space saving
- IP20 protection
- No battery maintenance
Function
| DC Voltage Measurement | • 1 bus voltage (48V/240V/336V nominal) • Range ±20%, overload 1.2× continuous • Accuracy 0.5 class • Frequency measurement not applicable |
| DC Current Measurement | • 3 channels via Hall sensors • Compatible with AHKCFA/F/BS series • Range 1%～120% of sensor rating • Accuracy 0.5 class • Overload 1.2× continuous |
| Power & Energy Measurement | • Active power per circuit • Active energy per circuit • Accuracy: power 1.0 class, energy 1.0 class • Energy accumulation based on 5A/5V internal |
| Leakage Current Monitoring | • 3 independent leakage inputs • Requires external Hall sensor (DC 5V output) • Adjustable overleakage alarm |
| Temperature Monitoring | • 4 NTC sensor inputs (R25=50kΩ, B=4150) • Range –20…150℃, accuracy ±1℃ • Sensor tip sizes: Ø12mm, Ø8mm, Ø6mm cylinder • Cable length 2m or 4m, colourcoded • Overtemp / undertemp alarm |
| Humidity Monitoring | • Builtin humidity sensor • Range 0～100% RH, resolution 0.10% • Can be used for environmental compensation or alarm |
| Digital Inputs | • 4 drycontact digital inputs • Configurable for alarm or status monitoring • Adjustable debounce filter • Supports normally open / normally close types |
| Digital Outputs | • 2 relay outputs • Contact capacity: 3A/30VDC, 3A/250VDC • Configurable as remote control or alarm output • Can be controlled via Modbus |
| Alarm Function | • Supports overvoltage, undervoltage, overcurrent, undercurrent, overpower, overtemperature, undertemperature, overleakage, DI status • Each alarm independently enable/disable and threshold setting • Alarm delay adjustable (0.1s resolution) • Buzzer onboard, can be remotely silenced • Alarm status readable via communication |
| Communication | • RS485/ModbusRTU protocol • Two RJ45 ports (one in, one out) for daisychain • Default baud rate 9600, adjustable to 1200, 2400, 4800, 19200, 38400 • Optional LORA wireless (506.5MHz) with external antenna • Works with AMB10/AMB10L72 display or ATC600 receiver • Supports up to 80 devices in one network |
| Data Recording | • Monthly energy data for last 12 months (per circuit) • Current year and previous year energy • Maximum demand values with timestamp (voltage, current, power) • Clear energy/demand via Modbus command • Leakage zero calibration via Modbus |
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Specification
| Parameter | Value |
| Measurement | DC voltage, current, active power, active energy, 3 leakage currents, 4 temperatures, humidity, digital I/O status |
| Bus Voltage | Nominal 48VDC, 240VDC, 336VDC; range ±20%; overload 1.2× continuous |
| Output Current (3 channels) | Via Hall sensors (AHKCFA/F/BS), 5V output; range 1%～120% of sensor rating; overload 1.2× continuous |
| Accuracy | Voltage/Current: 0.5 class; Power/Energy: 1.0 class; Temperature: ±1℃ |
| Auxiliary Power | AMB100D(/W): signal powered; AMB100D(/W)P1: independent DC power (follows bus voltage) |
| Temperature Input | 4 channels, NTC R25=50k, –20…150℃, accuracy ±1℃ |
| Leakage Current Input | 3 channels (requires external Hall sensor with DC 5V output) |
| Digital Inputs | 4 dry contacts |
| Digital Outputs | 2 relays, 3A/30VDC, 3A/250VDC |
| Communication | RS485/ModbusRTU (2 RJ45 ports) or LORA wireless (506.5MHz) |
| Mounting | DIN35 rail |
| Protection Grade | IP20 |
| Operating Temp. | –20℃…+60℃ |
| Storage Temp. | –25℃…+70℃ |
| Humidity | ≤93% RH (noncondensing) |
| Altitude | ≤2500m |
| Insulation Resistance | ≥100MΩ (all terminals to case) |
| Dielectric Strength | AC 2kV 1min between power/input/output/communication |
| EMC Compatibility | Level 4 for ESD, fast transient, surge; level 3 for RF field |
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FAQ
AMB100D(/W) is signalpowered, drawing energy from the measured circuit. For independent auxiliary power, choose AMB100D(/W)P1 with external DC supply (follows bus voltage).
AMB100D supports 4 NTC temperature sensors (–20…150℃) and 3 leakage current inputs (require external Hall sensor with DC 5V output). Temperature sensor tip sizes: Ø12mm, Ø8mm, and Ø6mm cylinder; cable lengths 2m or 4m; colourcoded.
Units are daisychained via RJ45 ports (RS485 I to RS485 II) using ModbusRTU protocol, and finally connected to an AMB10 display or touch screen. RS485 distance up to 1200m; LORA range depends on site conditions.
All alarm thresholds (overvoltage, undercurrent, temperature, leakage, etc.) can be read and modified via Modbus communication. Alarm status can be queried in real time.
Yes. It stores the last 12 months of percircuit active energy, as well as current and previous year energy, facilitating energy analysis. Maximum demand values with timestamps for voltage, current, and power are also recorded.
Yes, the leakage Hall sensors need an external DC power supply (typically ±12V or ±15V); the device does not provide this power and it must be separately supplied.
Summary
The AMB100-D delivers comprehensive DC monitoring in a single device, covering voltage, multiple output currents, power, energy, leakage, temperature, and humidity. Signal-powered design reduces installation complexity, while RS485 or LORA enables seamless integration. Programmable alarms detect insulation deterioration and overloads early, safeguarding DC supply. Ideal for space-constrained applications requiring reliable DC busway supervision.
